Your own IP blocklist

“Lists of places no app may reach. An Allow rule you made for one app still wins.” Add a single address like 203.0.113.7, or a range like 198.51.100.0/24, then click Add to blocklist.

• Open the Details disclosure to see and remove entries one at a time, or click Clear to empty the whole list.
• The same Details section has a self-test: Block 1.1.1.1 (or Unblock 1.1.1.1) tells you plainly whether it worked — “Test: 1.1.1.1 is blocked for every app” or “…is not blocked for every app” — with a hint to double-check yourself: curl --max-time 3 https://1.1.1.1.